package net.ruangtedy.android.latih.sqllite;

import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DatabaseHandler extends SQLiteOpenHelper {
	private static final int DATABASE_VERSION=1;
	 // Database Name
    private static final String DATABASE_NAME = "contactsManager";
 
    // Contacts table name
    private static final String TABLE_CONTACTS = "contacts";
 
    // Contacts Table Columns names
    private static final String KEY_ID = "id";
    private static final String KEY_NAME = "name";
    private static final String KEY_PH_NO = "phone_number";

	public DatabaseHandler(Context context) {
		super(context, DATABASE_NAME, null, DATABASE_VERSION);
	}

	@Override
	public void onCreate(SQLiteDatabase arg0) {
		String CREATE_CONTACTS_TABLE="CREATE TABLE " +TABLE_CONTACTS + "("+KEY_ID+" INTEGER PRIMARY KEY,"+ KEY_NAME +" TEXT,"
				+KEY_PH_NO+" TEXT"+")";
		arg0.execSQL(CREATE_CONTACTS_TABLE);
		
	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

		db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS);
		onCreate(db);
	}
	
	public void addContact(Contact contact){
		SQLiteDatabase db=this.getWritableDatabase();
		ContentValues values=new ContentValues();
		values.put(KEY_NAME,contact.get_name());
		values.put(KEY_PH_NO, contact.get_phone_number());
		
		db.insert(TABLE_CONTACTS, null, values);
		db.close();
	}
	public Contact getContact(int id){
		SQLiteDatabase db=this.getReadableDatabase();
		
		Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID,KEY_NAME, KEY_PH_NO }, KEY_ID + "=?",
	            new String[] { String.valueOf(id) }, null, null, null, null);
	    if (cursor != null)
	        cursor.moveToFirst();
	 
	    Contact contact = new Contact(Integer.parseInt(cursor.getString(0)),
	            cursor.getString(1), cursor.getString(2));
	    // return contact
	    return contact;
		
	}
	// Getting All Contacts
    public List<Contact> getAllContacts() {
        List<Contact> contactList = new ArrayList<Contact>();
        // Select All Query
        String selectQuery = "SELECT * FROM " + TABLE_CONTACTS;
 
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);
 
        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                Contact contact = new Contact();
                contact.set_id(Integer.parseInt(cursor.getString(0)));
                contact.set_name(cursor.getString(1));
                contact.set_phone_number(cursor.getString(2));
                // Adding contact to list
                contactList.add(contact);
            } while (cursor.moveToNext());
        }
 
        // return contact list
        return contactList;
    }
 
    // Updating single contact
    public int updateContact(Contact contact) {
        SQLiteDatabase db = this.getWritableDatabase();
 
        ContentValues values = new ContentValues();
        values.put(KEY_NAME, contact.get_name());
        values.put(KEY_PH_NO, contact.get_phone_number());
 
        // updating row
        return db.update(TABLE_CONTACTS, values, KEY_ID + " = ?",
                new String[] { String.valueOf(contact.get_id())});
    }
 
    // Deleting single contact
    public void deleteContact(Contact contact) {
        SQLiteDatabase db = this.getWritableDatabase();
        db.delete(TABLE_CONTACTS, KEY_ID + " = ?",
                new String[] { String.valueOf(contact.get_id()) });
        db.close();
    }
 
    // Getting contacts Count
    public int getContactsCount() {
        String countQuery = "SELECT  * FROM " + TABLE_CONTACTS;
        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.rawQuery(countQuery, null);
        cursor.close();
 
        // return count
        return cursor.getCount();
    }

}
